Container logs are present in DOM but not scrollable to bottom.

[LegendArtur]

The LogViewer extends beyond visible area, making recent logs inaccessible.

Changes

• Wrap LogViewer in flex container with height: '100%'
• Change LogViewer height from 100vh to 100%
• The parent container (ProjectPanel/SystemPage) already provides correct height via flexbox. Using viewport height (100vh) incorrectly references the full browser window instead of available container space.

// Before
<div className="project-log-tab">
  <LogViewer height={"100vh"} ... />
</div>

// After  
<div className="project-log-tab" style={{display: 'flex', flexDirection: 'column', height: '100%'}}>
  <LogViewer height={'100%'} ... />
</div>

Affects both project-level and system-level log viewers.

[LegendArtur]

Fixes #1581